People
who have been watching the network have noticed something really
strange: while the hashrate is increasing, the profitability is
decreasing. And this triggered lots of assumptions.

Zcash deals with a vulnerability

Zcash (ZEC), the other essential privacy-oriented coin released a report that reveals a mathematical mistake that was made in the code.

Cryptographic engineer Ariel Gabizon discovered this error. It revealed a security vulnerability that could have exposed ZEC to hackers.

“Eleven
months ago we discovered a counterfeiting vulnerability in the
cryptography underlying some kinds of zero-knowledge proofs,” the
reports writes.

Zcash continues and explains that “The
counterfeiting vulnerability was fixed by the Sapling network upgrade
that activated on October 28th, 2018. The vulnerability was specific to
counterfeiting and did not affect user privacy in any way. Before its
remediation, an attacker could have created fake Zcash without being
detected. The counterfeiting vulnerability has been fully remediated in
Zcash, and Zcash users require no action.”

Zooko Wilcox is the Zcash’s CEO, and he said that he’s positive there wasn’t any exploitation of this flaw.

He told
Fortune that he’s confident that people don’t know cryptography that
well these days, at least not well enough to have taken advantage of
this flaw/vulnerability.

But he highlighted that still, the team cannot be 100% sure that this did not happen.

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